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HomeMy WebLinkAbout215 Riverside_ Sewer Capacity Memo-3-27-2019-COMPLETESEWER CAPACITY MEMORANDUM 215 Riverside Avenue Newport Beach, CA 92663 PREPARED BY: Fuscoe Engineering, Inc. 16795 Von Karman, Suite 100 Irvine, CA 92606 (949) 474-1960 Project Number: 1843-002-01 Project Manager: Joshua Ruiz Date Prepared: March 27, 2019 1 Sewer Capacity Memorandum 215 RIVERSIDE AVENUE Newport Beach, CA March 27, 2019 Purpose The purpose of this report is to present the results of the evaluation of the sewer capacity analysis for the 215 Riverside Avenue project. Project Site Location The existing site is located in the City of Newport Beach, CA. The site is to the northwest of the intersection of Riverside Avenue and Avon Street. Existing Conditions The site area is 0.4 acre. Based on our review, the existing two-story building currently serves as office space, along with a restaurant. Based on our review of CC Appeal of PC Approval of Use Permit for Nesai Restaurant (see Attachment 1), the following is the usage of the existing site: · First-Floor Restaurant (107 seats) · Second Floor Office Space (2,830 square feet) · Third Floor Office Space (2,316 square feet) Based on our review of the City of Newport Beach GIS sewer atlas map (see Attachment 2), it appears that the existing wastewater is directed to an existing 6” City sewer line in Avon Street. From there, the line drains to the existing 8” sewer line in Riverside Avenue. The line continues southerly, and becomes a 12” diameter line at the southerly end of Riverside Avenue, and then connects to the existing Orange County Sanitation District (OCSD) sewer line in West Coast Highway (WCH). Sewer Capacity Memorandum 215 RIVERSIDE AVENUE Newport Beach, CA March 27, 2019 2 Proposed Development The proposed development includes demolition of the existing building, and construction of the new retail building. It is assumed that the existing 6” lateral in Avon Street will continue to be utilized. The total proposed commercial building area will be 3,106 square feet. The area calculations for the proposed project are as follows: Main Level: 2nd Level: Sewer Capacity Memorandum 215 RIVERSIDE AVENUE Newport Beach, CA March 27, 2019 3 Sewer Generation Calculations (City of Los Angeles Sewer Factors) Since the City of Newport Beach does not have sewer generation factors for retail, commercial, or office uses (only residential), City of Los Angeles Sewer Factors were used. The calculations are based on the building square footage, along with a peaking factor. The following are the sewer calculations for both existing and proposed conditions: · Existing Condition o First Floor Restaurant; 107 seats x 30 gpd = 3,210 gpd o Second Floor Office; 2,830 square feet x 120/1000 gpd = 340 gpd o Third Floor Office; 2,316 square feet x 120/1000 gpd = 278 gpd  Total Average Daily Flow = (3,210+340+278) = 3,828 gpd  Peak Flow (peaking factor = 2.5): 9,570 gpd (0.0148 cfs) · Proposed Condition (commercial/retail): (50 gpd/1000 sf) x 3,106 square feet o 156 gpd o Peak Flow (peaking factor = 2.5): 390 gpd (0.0006 cfs) A copy of the City of Los Angeles Sewerage Generation Factor Table is included as Attachment 2. Sewer Flow-Depth Calculations The flow-depth calculations of the peak flow were prepared using FlowMaster computer program. The flow-depth calculations shows an existing and proposed percent-full of 11.2% and 2.5%, respectively. The calculations demonstrate that the proposed development will not adversely impact the existing sewer system, since the percent-full of the sewer system does not exceed 50%-full. In addition, the proposed sewer loading will be less than the existing condition loading. The calculations are included on the following pages. Sewer Capacity Memorandum 215 RIVERSIDE AVENUE Newport Beach, CA March 27, 2019 4 Sewer Capacity Memorandum 215 RIVERSIDE AVENUE Newport Beach, CA March 27, 2019 5 Sewer Capacity Memorandum 215 RIVERSIDE AVENUE Newport Beach, CA March 27, 2019 6 Conclusion The calculations presented in this memorandum show that the proposed 215 Riverside Avenue project will not adversely impact the existing sewer system. The proposed condition sewer loading will be less than that of the existing condition for the project site. In addition, the depths in the existing sewer lateral of 11.2%-full (existing condition) or 2.5%- full (proposed) do not exceed the City of Newport Beach design criteria of 50%-full. Attachments: 1. Pages 249 & 281 from CC Appeal of PC Approval for Nesai Restaurant 2. GIS Sewer Atlas 3. City of Los Angeles Sewerage Generation Factor Table Sewer Capacity Memo – 215 Riverside Avenue Newport Beach, CA ATTACHMENT 1 Pages from CC Appeal of PC Approval of Use Permit for Nesai Restaurant Frlsnrvc FVUmNc AeFA0AL05. WT EFOOTAGE: 14.1918W/aEFEET A MUM FAR ryS %LOT AAEA)I&<9] %US -OM SGIA^AE FEET WILDING AP FIRSTFLMAMESTAURl Z910M..FT. 8.05450. R. a SM SO. FT.. FAR - O ik- j SfTE PLAN N VMG 4]nn 4oTO]4 Rvnen ne c oesleN xs] xs wm [. RI. Slsysn.on R.n[n 1 elll nl. B.e. nI: xl s .o] . 1 se z W Q HmwU a o w >m a =8 G z O I z 5 aW 1.0 NOCi Prow W MA MSIMltI1S Main Dining 914 sq ft 39 seats KY wnn.m au Main Patio Ft 602 sq ft 30 seats 07/13/2012 0 0 am xisreq gliliN ML'I gNN]1 MYYri 000115 AT W T UU ' Chef's Dining ZI, ° WG 269 sq ft 16 seats j C WN PAIO 000115 / O11FY Chef's Patio L 388 sq ft EMRY O zz seats Community Development Department- Planning Division 0 N1NY V I i i i i i i v 19 Sewer Capacity Memo – 215 Riverside Avenue Newport Beach, CA ATTACHMENT 2 GIS Sewer Atlas Feet Every reasonable effort has been made to assure the accuracy of the data provided, however, The City of Newport Beach and its employees and agents disclaim any and all responsibility from or relating to any results obtained in its use. Disclaimer: 2/8/2019 0 200100 Sewer Capacity Memo – 215 Riverside Avenue Newport Beach, CA ATTACHMENT 3 City of Los Angeles Sewerage Generation Factors Line FACILITY DESCRIPTION PROPOSED SGF IN GPD BOD SS No.(mg/l) (mg/l) 1 Acupuncture Office/Clinic 120/1,000 Gr SF 265 275 2 Arcade - Video Games 50/1,000 Gr SF 265 275 3 Auditorium (a) 3/Seat 265 275 4 Auto Parking (a) 20/1,000 Gr SF 265 275 5 Auto Mfg., Service Maintenance (b) Actual 1,260 1,165 6 Bakery 280/1,000 Gr SF 3,020 2,540 7 Bank: Headquarters 120/1,000 Gr SF 265 275 8 Bank: Branch 50/1,000 Gr SF 265 275 9 Ballroom 350/1,000 Gr SF 265 275 10 Banquet Room 350/1,000 Gr SF 265 275 11 Bar: Cocktail, Fixed Set (a) (c) 15/Seat 265 275 12 Bar: Juice, No Baking Facilities (d) 720/1,000 Gr SF 265 275 13 Bar: Juice, with Baking Facilities (d) 720/1,000 Gr SF 265 275 14 Bar: Cocktail, Public Table Area (c) 720/1,000 Gr SF 265 275 15 Barber Shop 120/1,000 Gr SF 265 275 16 Barber Shop (s) 15/Stall 265 275 17 Beauty Parlor 425/1,000 Gr SF 265 275 18 Beauty Parlor (s) 50/Stall 265 275 19 Bldg. Const/Field Office (e) 120/Office 265 275 20 Bowling Alley: Alley, Lanes & Lobby Area 50/1,000 Gr SF 265 275 21 Bowling Facility: Arcade/Bar/Restaurant/Dancing Total Average Average 22 Cafeteria: Fixed Seat 30/Seat 1,000 600 23 Car Wash: Automatic (b) Actual 265 285 24 Car Wash: Coin Operated Bays (b) Actual 265 285 25 Car Wash: Hand Wash (b) Actual 265 285 26 Car Wash: Counter & Sales Area 50/1,000 Gr SF 265 275 27 Chapel: Fixed Seat 3/Seat 265 275 28 Chiropractic Office 120/1,000 Gr SF 265 275 29 Church: Fixed Seat 3/Seat 265 275 30 Church School: Day Care/Elem 9/Occupant 265 275 31 Church School: One Day Use (s) 9/Occupant 265 275 32 Cocktail Lounge: Fixed Seat (f) 15/Seat 265 275 33 Coffee House: No Food Preparation (d) 720/1,000 Gr SF 265 275 34 Coffee House: Pastry Baking Only (d) 720/1,000 Gr SF 265 275 35 Coffee House: Serves Prepared Food (d) 25/Seat 1,000 600 36 Cold Storage: No Sales (g) 30/1,000 Gr SF 265 275 37 Cold Storage: Retail Sales (g) 50/1,000 Gr SF 265 275 38 Comfort Station: Public 80/Fixture 265 275 39 Commercial Use (a) 50/1,000 Gr SF 265 275 40 Community Center 3/Occupant 265 275 41 Conference Room of Office Bldg. 120/1,000 Gr SF 265 275 42 Counseling Center (h) 120/1,000 Gr SF 265 275 43 Credit Union 120/1,000 Gr SF 265 275 44 Dairy Average Flow 1,510 325 45 Dairy: Barn Average Flow 1,510 325 46 Dairy: Retail Area 50/1,000 Gr SF 265 275 47 Dancing Area (of Bars or Nightclub) (c) 350/1,000 Gr SF 265 275 48 Dance Studio (i) 50/1,000 Gr SF 265 275 49 Dental Office/Clinic 250/1,000 Gr SF 265 275 SEWARAGE FACILITIES CHARGE SEWAGE GENERATION FACTOR FOR RESIDENTIAL AND COMMERCIAL CATEGORIES EFFECTIVE DATE: April 6, 2012 Page 1 Line FACILITY DESCRIPTION PROPOSED SGF IN GPD BOD SS No.(mg/l) (mg/l) SEWARAGE FACILITIES CHARGE SEWAGE GENERATION FACTOR FOR RESIDENTIAL AND COMMERCIAL CATEGORIES EFFECTIVE DATE: April 6, 2012 50 Doughnut Shop 280/1,000 Gr SF 1,000 600 51 Drug Rehabilitation Center (h) 120/1,000 Gr SF 265 275 52 Equipment Booth 30/1,000 Gr SF 265 275 53 Film Processing (Retail) 50/1,000 Gr SF 265 275 54 Film Processing (Industrial) Actual 265 275 55 Food Processing Plant (b) Actual 2,210 1,450 56 Gas Station: Self Service 100/W.C. 265 275 57 Gas Station: Four Bays Max 430/Station 1,950 1,175 58 Golf Course Facility: Lobby/Office/Restaurant/Bar Total 700 450 59 Gymnasium: Basketball, Volleyball (k) 200/1,000 Gr SF 265 275 60 Hanger (Aircraft) 50/1,000 Gr SF 265 275 61 Health Club/Spa (k) 650/1,000 Gr SF 265 275 62 Homeless Shelter 70/Bed 265 275 63 Hospital 70/Bed 820 1,230 64 Hospital: Convalescent (a) 70/Bed 265 275 65 Hospital: Animal 300/1,000 Gr SF 820 1,230 66 Hospital: Psychiatric 70/Bed 265 275 67 Hospital: Surgical (a) 360/Bed 265 275 68 Hotel: Use Guest Rooms Only (a) 120/Room 265 275 69 Jail 85/Inmate 265 275 70 Kennel: Dog Kennel/Open 100/1,000 Gr SF 265 275 71 Laboratory: Commercial 250/1,000 Gr SF 265 275 72 Laboratory: Industrial Actual 265 275 73 Laundromat 185/Machine 550 370 74 Library: Public Area 50/1,000 Gr SF 265 275 75 Library: Stacks, Storage 30/1,000 Gr SF 265 275 76 Lobby of Retail Area (l) 50/1,000 Gr SF 265 275 77 Lodge Hall 3/Seat 265 275 78 Lounge (l) 50/1,000 Gr SF 265 275 79 Machine Shop (No Industrial Waste Permit Required) (b) 50/1,000 Gr SF 265 275 80 Machine Shop (Industrial) Actual 265 275 81 Mfg or Industrial Facility (No IW Permit Required) (b) 50/1,000 Gr SF 265 275 82 Mfg or Industrial Facility (Industrial) Actual 265 275 83 Massage Parlor 250/1,000 Gr SF 265 275 84 Medical Building (a) 225/1,000 Gr SF 265 275 85 Medical: Lab in Hospital 250/1,000 Gr SF 340 275 86 Medical Office/Clinic 250/1,000 Gr SF 265 275 87 Mini-Mall (No Food) 50/1,000 Gr SF 265 275 88 Mortuary: Chapel 3/Seat 265 275 89 Mortuary: Embalming 300/1,000 Gr SF 800 800 90 Mortuary: Living Area 50/1,000 Gr SF 265 275 91 Motel: Use Guest Room Only (a) 120/Room 265 275 92 Museum: All Area 30/1,000 Gr SF 265 275 93 Museum: Office Over 15% 120/1,000 Gr SF 265 275 94 Museum: Sales Area 50/1,000 Gr SF 265 275 95 Office Building (a) 120/1,000 Gr SF 265 275 96 Office Bldg w/Cooling Tower 170/1,000 Gr SF 265 275 97 Plating Plant (No IW Permit Required) (b) 50/1,000 Gr SF 265 275 98 Plating Plant (Industrial) (b) Actual 265 275 Page 2 Line FACILITY DESCRIPTION PROPOSED SGF IN GPD BOD SS No.(mg/l) (mg/l) SEWARAGE FACILITIES CHARGE SEWAGE GENERATION FACTOR FOR RESIDENTIAL AND COMMERCIAL CATEGORIES EFFECTIVE DATE: April 6, 2012 99 Pool Hall (No Alcohol) 50/1,000 Gr SF 265 275 100 Post Office: Full Service (m) 120/1,000 Gr SF 265 275 101 Post Office: Private Mail Box Rental 50/1,000 Gr SF 265 275 102 Prisons 175/Inmate 265 275 103 Residential Dorm: College or Residential (n) 70/Student 265 275 104 Residential: Boarding House 70/Bed 265 275 105 Residential: Apt - Bachelor (a) 75/DU 265 275 106 Residential: Apt - 1 BDR (a) (o) 110/DU 265 275 107 Residential: Apt - 2 BDR (a) (o) 150/DU 265 275 108 Residential: Apt - 3 BDR (a) (o) 190/DU 265 275 109 Residential: Apt - >3 BDR (o) 40/BDR 265 275 110 Residential: Condo - 1 BDR (o) 110/DU 265 275 111 Residential: Condo - 2 BDR (o) 150/DU 265 275 112 Residential: Condo - 3 BDR (o) 190/DU 265 275 113 Residential: Condo - >3 BDR (o) 40/BDR 265 275 114 Residential: Duplex/Towhhouse - 1 BR (o) 110/DU 265 275 115 Residential: Duplex/Towhhouse - 2 BR (o) 150/DU 265 275 116 Residential: Duplex/Towhhouse - 3 BR (o) 190/DU 265 275 117 Residential: Duplex/Towhhouse - >3 BR (o) 40/BDR 265 275 118 Residential: SFD - 1 BR (o) 140/DU 265 275 119 Residential: SFD - 2 BR (o) 185/DU 265 275 120 Residential: SFD - 3 BR (o) 230/DU 265 275 121 Residential: SFD - >3 BR (o) 45/BDR 265 275 122 Residential Room Addition: Bedroom (o) 45/BDR 265 275 123 Residential Room Conversion: Into a Bedroom (o) 45/BDR 265 275 124 Residential: Mobile Home Same as Apt 265 275 125 Residential: Artist (2/3 Area) 75/DU 265 275 126 Residential: Artist Residence 75/DU 265 275 127 Residential: Guest Home w/ Kitchen Same as Apt 265 275 128 Residential: Guest Home w/o Kitchen 45/BDR 265 275 129 Rest Home 70/Bed 555 490 130 Restaurant: Drive-In 50/Stall 1000 600 131 Restaurant: Drive-In Seating Area 25/Seat 1000 600 132 Restaurant: Fast Food Indoor Seat 25/Seat 1000 600 133 Restaurant: Fast Food Outdoor Seat 25/Seat 1000 600 134 Restaurant: Full Service Indoor Seat (a) 30/Seat 1000 600 135 Restaurant: Full Service Outdoor Seat 30/Seat 1000 600 136 Restaurant: Take Out 300/1,000 Gr SF 1000 600 137 Retail Area (greater than 100,000 SF) 50/1,000 Gr SF 265 275 138 Retail Area (less than 100,000 SF) 25/1,000 Gr SF 265 275 139 Rifle Range: Shooting Stalls/Lanes, Lobby 50/1,000 Gr SF 265 275 140 Rifle Range Facility: Bar/Restaurant Total Average Average 141 School: Arts/Dancing/Music (i) 11/Student 265 275 142 School: Elementary/Jr. High (a) (p) 9/Student 265 275 143 School: High School (a) (p) 11/Student 265 275 144 School: Kindergarten (s) 9/Student 265 275 145 School: Martial Arts (i) 9/Student 265 275 146 School: Nursery-Day Care (p) 9/Child 265 275 147 School: Special Class (p) 9/Student 265 275 Page 3 Line FACILITY DESCRIPTION PROPOSED SGF IN GPD BOD SS No.(mg/l) (mg/l) SEWARAGE FACILITIES CHARGE SEWAGE GENERATION FACTOR FOR RESIDENTIAL AND COMMERCIAL CATEGORIES EFFECTIVE DATE: April 6, 2012 148 School: Trade or Vocational (p) 11/Student 265 275 149 School: Training (p) 11/Student 265 275 150 School: University/College (a) (p) 16/Student 265 275 151 School: Dormitory (a) (n) 70/Student 265 275 152 School: Stadium, Pavilion 3/Seat 265 275 153 Spa/Jacuzzi (Commercial with backwash filters) Total 265 275 154 Storage: Building/Warehouse 30/1,000 Gr SF 265 275 155 Storage: Self-Storage Bldg 30/1,000 Gr SF 265 275 156 Store: Ice Cream/Yogurt 25/1,000 Gr SF 1000 600 157 Store: Retail (l) 50/1,000 Gr SF 265 275 158 Studio: Film/TV - Audience Viewing Room (q) 3/Seat 265 275 159 Studio: Film/TV - Regular Use Indoor Filming Area (q) 50/1,000 Gr SF 265 275 160 Studio: Film/TV - Ind. Use Film Process/Machine Shop (q) 50/1,000 Gr SF 265 275 161 Studio: Film/TV - Ind. Use Film Process/Machine Shop Total 265 275 162 Studio: Recording 50/1,000 Gr SF 265 275 163 Swimming Pool (Commercial with backwash filters) Total 265 275 164 Tanning Salon: Independent, No Shower (r) 50/1,000 Gr SF 265 275 165 Tanning Salon: Within a Health Spa/Club 640/1,000 Gr SF 265 275 166 Theater: Drive-In 6/Vehicle 265 275 167 Theater: Live/Music/Opera 3/Seat 265 275 168 Theater: Cinema 3/Seat 265 275 169 Tract: Commercial/Residential 1/Acre 265 275 170 Trailer: Const/Field Office (e) 120/Office 265 275 171 Veterinary Clinic/Office 250/1,000 Gr SF 265 275 172 Warehouse 30/1,000 Gr SF 265 275 173 Warehouse w/ Office Total 265 275 174 Waste Dump: Recreational 400/Station 2650 2750 175 Wine Tasting Room: Kitchen 200/1,000 Gr SF 265 275 176 Wine Tasting Room: All Area 50/1,000 Gr SF 265 275 Page 4 1 FOOTNOTES TO SGFs TABLE (a) SFC rates for these facilities have historically been published in SFC ordinances. (b) Bureau of Sanitation will determine the flow based on the information given by applicants for facilities with industrial discharge. The flow will be redetermined by Sanitation inspectors annually based on water bills. If the actual flow exceeds the previous year’s determined flow, the applicants will be charged for the difference. If this type of facility is exempt from an industrial discharge permit, only the domestic SFC will be assessed. (c) The SFC for a bar shall be the sum of SFC's for all areas based on the SGF for each area (ex. fixed seat area, public table area, dancing area). (d) The determination of SGF for juice bars and coffee houses previously depended on the extent of the actual food preparation in house, not by the types of food provided. Food is assumed to be prepared offsite and as such, the three prior subcategories have been consolidated. 1) SGF for no pastry baking and no food preparation is 720 gpd/1000 gr.sq.ft. 2) SGF for pastry baking only and no food preparation is 720 gpd/1000 gr.sq.ft. 3) SGF for complete food preparation is 25 gpd/seat, the same as a fast food restaurant. Juice bars and coffee houses do not serve any alcoholic drinks. (e) Building construction includes trailers, field offices, etc. (f) Cocktail lounge usually does not serve prepared food. (g) Cold storage facilities are categorized as follow: 1) No Sales - the cold storage facility is used only for temporary storage, no selling is involved. For example, cold storage facilities at the harbor temporarily store seafood until it is distributed. 2) Cold storage w/ retail sales - the primary function of this facility is to support the wholesale/retail operation of a store, such as supermarket freezers, refrigerators, etc. (h) Counseling centers include marriage counseling centers, alcohol/drug rehabilitation /dependency centers, nutrition centers, diet centers, etc. 2 (i) Part-time basis schools or dance studios should be charged as retail area - 50 gpd /1000 gr.sq.ft. Full-time basis schools should be charged by the number of students. (j) Domestic waste is estimated at 50 gpd/1,000 square feet in addition to total process flow. (k) Bureau of Sanitation will determine if an industrial permit is needed for health spas. The first year flow is based on 650 gpd/1000 gr.sq.ft., and the Sanitation inspectors will redetermine the flow annually based on water bill from the previous year. The applicants are responsible for paying the difference of SFC. Health club/spa includes lobby area, workout floors, aerobic rooms, swimming pools, Jacuzzi, sauna, locker rooms, showers, and restrooms. If a health club/spa has a gymnasium type of facility, this portion should be charged separately at the gymnasium SFC rate. Gymnasiums include basketball court, volleyball court, and any other large open space with low occupancy density. (l) Lobby of retail includes lounges, holding rooms, or waiting area, etc. (m) Full service post offices include U.S. Postal Service, UPS, Federal Express, DHL, and etc. (n) The SGF for a college dormitory based on student capacity also includes the SGF for the dormitory cafeterias. (o) A bedroom is defined as an enclosed subdivision with 50 sq.ft. or more floor area in a residential building commonly used for sleeping purpose, and is partitioned off to form a habitable room. (p) The SGF for schools based on the student capacity, covers the following facilities: 1) classrooms and lecture halls 2) professors' offices 3) administration offices 4) laboratories for classes or research 5) libraries 6) bookstores 7) student/professor lounges 8) school cafeterias 9) warehouses and storage areas 10) auditoriums 11) gymnasiums 12) restrooms 3 It does not include water used by schools for swimming pools. When a school files an application for addition of any of the foregoing facilities, the student population will be reassessed and the total gpd for the new facility will be based on the number of students increased since the last SFC was paid or when the City implemented the SFC for the first time. The SFC for any school facility (ex. stadium, dormitory, etc.) not listed above, will be based on the designated SGF for that category. (q) The SFC for a TV or motion picture studio shall be the sum of SFC's for different facilities in the studio, based on the SGF for each facility. A studio may include one or more of the following facilities: audience viewing room, filming room, film processing, storage area, etc. (r) No independent tanning salons with shower were encountered during 1996 survey. (s) Alternative basis of charge for City’s consideration. The prior square footage basis is also presented should the City decide to continue charging on that basis.